Printing-press.



No. 664,578. Patented Dec. 25, I900.

G. E. PANCOAST.

PRINTING PRESS.

(Application filed Feb. 10, 18990 (No Model.) 2 Sheets-Sheet 1 MM munNo. 664,578. Patented Dec. 25, 1900.

a. E. PANCOAST.

PRINTING PRESS.

(Application filed Feb. 10, 1899 I (No Model.)

2 Sheets-Sheet 2.

m Em Wm Iii ill} "ml lllll l l!lil" 5H1 INVENTOR uy 0 E1, BY W ATTORNEYSUNITED STATES PATENT OFFICE.

. GEORGE E. PANOOAST, OF NEW YORK, N. Y., ASSIGNOR TO THE AMERICANLITHOGRAPHIO COMPANY, OF NEW YORK.

PRINTING-PRESS.

SPECIFICATION forming part Of Letters Patent No. 664.578, dated.December 25, 1900.

Application filed February 10, 1899. Serial No. 705 ,155. (No model.)

To all whom it may concern:

Be it known that I, GEORGE E. PANcoAsT, a citizen of the United States,and a resident of New York, (Brooklyn,) in the county of Kings and Stateof New York, have invented certain new and useful Improvements inPrinting- Presses, of which the following is a specification.

My invention relates to printing-presses.

It has for an object to improve the operation of a roller or otherelongated device which makes contact throughout its length, or asubstantial part thereof, with another surface or surfaces and operatesin such contact or contacts.

More especially, it has for an object to improve the operation of such aroller when it is brought intermittently into contact with a cooperatingsurface or alternately int'o contact with two or more cooperatingsurfaces bya rocking motion-as, for instance, an inkductor roller whichmoves between a fountain-roller and an ink-distributing roller in theinking mechanism of a printing-press.

In the accompanying drawings, which form a part hereof, I haverepresented the application of my invention in its preferred forms tothe case of an ink-ductor roller serving to convey the ink from anink-fountain roller to an ink-distributin g roller by rocking betweenthe two; but my invention 'is not limited to this particular applicationthereof.

Figures 1 and 2 are respectively sectional and side views in detail ofthe duotor-roller or its shaft and immediately-connected parts. Figs. 3and 4 are similar views showing a modified form of certain of the parts.Figs. 5 and 6 are similar views, of another modification. Figs. 7 and 8are similar views of still another modification. Figs. 9, 10, and 11 areside, end, and top views, respectively, of the general apparatus of thepress involving the invention in the form shown in Figs. 1 and 2.

Like letters in the several figures indicate like parts.

A is the ductor-roller or its shaft.

Bis the support of the roller or shaft A, by which the shaft issupported and in which it 50 turns. In the construction shown in Figs.1,

2, 9, 10, and 11, B is a sliding box carrying position of adjustment.

the shaft A at each end of the shaft. In the construction of Figs. 3 to8, inclusive, Bis inv the form of a hub carrying the ends of the shaftA. 5

O is the rock-shaft, which carries the supports B, one at each end ofthe rock-shaft, and which rocks them and through them the shaft orroller A, which they support.

D is the means for rocking the rock-shaft C. It may be operated in anydesired way, the details of which form no part of the present invention.The rock-shaft O is of course properly journaled in some suitablesupporting part of the press.

E is the fountain-roller,which rotates in the mouth of the ink-fountainG.

F is the main ink-distributing cylinder, to which the ink is conveyed bythe ductor-roller A from the fountain-roller E.

In the construction shown in Figs. 1 and 2 and 9, 10, and 11 therock-shaft 0 supports and rocks the roller-supports B by the followingintervening mechanism: H is an arm having at one end acollar encirclingthe rocking shaft 0, which is keyed fast to that rockshaft, and at theother end a slideway for the sliding box B. Between the sliding box andthe ends of the slideway on each side is a spring I, which is madeadjustable by means of the screw-threaded bolt J. K is a'jam-nut forlocking the threaded bolt J in any desired By screwing the threaded boltJ in against the spring the spring is compressed, and thereby made moreresistant to further compression. There is one of these arms H at eachend of the rockshaft 0, with its springs I, adjusting bolts J, andlocking-nuts K. It will be noted that, as

is ordinarily the case, the means D for rock- 0 ing the rock-shaftoperate upon one end only of that shaft in the form of constructionshown in the drawings. In the absence of the springs I from the train ofmechanism between rockshaft 0 and the supports B of the rollerA the 5eifect of any torsion or twist in the rock-shaft 0 between the points ofsecurement of the two arms H H on that shaft in the operation of rockingthe roller A or of any torsional weakness in that shaft between thosepoints would be to gradually vary the character of the contact of theroller A with its contacting with the contacting device,

devices E and F from one end of the roller to the other, thereby varyingthe amount of'contact pressureat different points of the length of theroller and so varying the quantity of ink or other liquid carried overby the operation of the roller'E to the roller F at diifereut pointsalong the lengths of the same. The presence of the springsl in the trainof mechanism between the rock-shaft G and the supportB brings about theresult that the rock ing motion of the rock-shaft C may continue afterthe roller A has made positive contact Thus in the construction shown inFigs. 1, 2, 9, 10, and 11, where there are four springs I, the operationspecifically is as follows: When the ductorroller Ais being rockedtoward the fountainroller E and contacts with that roller, the motion ofthe rock-shaft C may be continued a little farther in the samedirection, the arm H on that end of the rock-shaft moving positivelywith the rock-shaft and the support B sliding in-the slideway in the endof the arm H and compressing the spring that is on the side of thesliding box away from the contacting device E. This further oradditional permissive motion of the rock-shaft G will serve at the otherend of that rock-shaft to produce the required pressure between theroller A and the roller E, and this whether there is a spring I at thatfar end of the roller or not. When there is no spring at the far end ofthe roller, the torsional spring of the rock shaft itself takes itsplace. Thus certainty of contact from end to end of the elongated contacting device is assured in spite of torsional twist' or weakness inthe rock-shaft O and in spite of possible imperfections in the parts ofthe mechanical movement. The presence, however,

of a similar spring I at the far end of the rockshaft 0, between it andthe support B at that far end of the roller A, and the adj ustability ofthe two springs I make possible a further additional result, as follows:If that spring I at the far end of the rock-shaft and roller is mademore resistant either by adjustment or by original construction or inany other way than the corresponding spring I at the near end of therock-shaft and the roller'to wit,

far and near with respect to the location of the single driving means D,arranged at one end of the rock-shaft C-it will result that not only iscertainty of the fact of contact from end to end of the contactingdevices se-. cured in spite of torsion in the rock-shaft,

but'the ultimate pressure of contactthat is to say, the character of thecontactalso can :be equalized from end to end of the contacting devices,and thus the effect of any possible torsion in the rockshaft 0 be whollycounteracted. When the ductor-roller A is rocked in the other directionand comes into contact with the main ink-distributing cylinder F, theopposite springs I at the other side of the sliding boxes operate in thesame way respectively and with the same result.

When a roller makes contact at one side or 3 in one direction only, theeffect of torsion in the rock-shaft may be overcome by the use of a lessresistant spring in the support at the far end of the shaft. This resultis attained by so setting the supports of the roller on the rockshaftthat when the roller is brought into contact by rocking the shaft thefar end of the roller will first make contact with the cooperatingsurface. The springin the support at the far end of the rock-shaft willthen be put under tension before the nearer end of the roller makescontact and will thus apply pressure to the far end of the roller, whichpressure by proper adjustment of the spring may be made to equal thepressure applied to the nearer end of the roller.

In Figs. 3 to 8, inclusive, are shown three possible modifications inthe character of spring or the method of interposlng it between therock-shaft C and the support or supports B of the roller or device to beoscillated. Many other modifications in the position and arrangement andform of I such spring might be made without departing from my invention.

In Figs. and 4 the arm L is fast to the roller-support B, and at itslower end has a collar encircling the rock-shaft C, but rotating freelyon that shaft. S is a collar or hub on the shaft C, made fast to thatshaft and carrying two upwardly-projecting lugs or arms N. O is a ingprojecting laterally from the arm L and between the lugs N N of the hubS. On each side of this lug O are arranged the springs I, compressedagainst the sides of the ing and adjustably compressed by means ofscrew-bolts J, tapped in the side walls of the arms or lugs N and lockedin position by the jam-nuts K. In this construction whenever therock-shaftO is rocked in one direction or the other the motion iscommunicated to the support B through hub S, one of the arms N, one ofthe springs I, lug O, and arm L, and any resistance to the motion of thesupport B results in a compression of said spring I, as in the case ofthe construction of Figs. 1 and 2. I

In the construction of Figs. 5 and 6, L is, as before, an arm which isfast to the sup port B and has a collar which loosely encircles theshaft 0. That collar has at the bottom a depending andlaterally-projecting lug T. The hub S, which is fast on the rockshaftO,'has two depending lugs or arms M M, between which the lug T extends.The springs I are mounted in the arms M and bear against the lug T andare adjustable by the screw-bolts J, which are tapped in the side wallsof the arms M and are locked by the jam-nuts K. The operation is evidentfrom the construction.

In the modification of Figs. 7 and 8, P is the spring. It is a long flatspring solidly mounted at its lower end in the hub S, which is keyedfast to the shaft 0, and at its upper end loosely held ina verticalgroove of the hub or support B. That support B is itself S. The collar Qalso closely fits this post V,

and when adjusted in vertical position by the lower of the two nuts B itis locked in place by the upper of the two nuts R. Adjustment of thiscollar Q upward results in less operative length of the spring and soless flexibility, and vice versa.

I prefer to arrange a spring at each end of the rock-shaft, and I preferto make the spring or springs adjustable and to arrange the drivingmeansat one end only of the rock-shaft and to construct or adjust aspring at the, near end which shall be less resistant and a spring atthe far end which shall be more resistant, and I prefer to associatethe-rocking roller or device with two contacting surfaces, one placed ateach end of its path of rocking motion, and in such case to have adoubleacting spring or double set of springs; but these are notessentials of the invention in its broadest expression.

I have described the invention as specificall'y applied to theductor-roller in an inking mechanism 5' but it may be manifestlyequally.

well applied to the ductor-roller in a dampening mechanism and to otherdevices, rollers or otherwise, that are elongated and that operate bycontact produced by rocking and that are so rocked by a shaft supportingthe device at both ends.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination with a ductor or other roller or elongated device tooperate by contact, and the contacting device itself with which it is toso operate, and a suitable support for the roller at each end thereofand a rock-shaft carrying the said supports one at each end of theshaft, and means to rock the rock-shaft applied at or near one endthereof, of a spring interposed between the rockshaft and theroller-support at at least one end of the shaft, whereby the motion isthere conveyed from the rock-shaft to the support through the spring andthe effect of torsion in the rock-shaft upon the fact or character ofcontact from end to end of the roller may be counteracted, substantiallyas described.

2. In combination with a ductor or other roller or elongated device tooperate by contact, and the contacting device itself with which it is toso operate, and a suitable support for the roller at each end thereofand a rock-shaft carrying the said supports one at each end of theshaft, and means to rock the rock-shaft, of a spring at each end of therockshaft applied at ornear one end thereof interposed between the rockshaft and the roller-support, whereby the motion is there conveyed fromthe rock-shaft to the supports through the springs and the effect oftorsion in the rock-shaft upon the fact or character of contact from endto end of the roller may be counteracted, substantially as described.

3. In combination with a ductor or other roller or elongated device tooperate by contact, and the contacting device itself with which it is toso operate, and a suitable support for the roller at each end thereofand a rock-shaft carrying the said supports one at each end of theshaft, and means to rock the rocksshaft applied at or near one endthereof, of an adjustable spring interposed between the rock-shaft andthe roller-support at at least one end of the shaft, whereby the motionis there conveyed from the rock-shaft to the support through the springand the efiect of torsion in the rock-shaft upon the fact or characterof contact from end to end of the roller may be counteracted,substantially as described.

4. In combination with a ductor or other roller or elongated device tooperate by contact, and the contacting device itself with which it is toso operate, and a suitable support for the roller at each end thereofand a rock-shaft carrying the said supports one at each end of theshaft, and means to rock the rock-shaft applied at or near one endthereof, of 'an adjustable spring at each end of the rock-shaftinterposed between the rock-shaft and the roller-support, whereby themotion is there conveyed from the rock-shaft to the su pport-s throughthe springs and the effect of torsion in the rock-shaft upon the fact orcharacter of contact from end to end of the roller may be counteracted,substantially as described.

5. In combination with a ductor or other roller or elongated device tobe rocked and to operate by contact, and the contacting device itselfwith which it is to so operate, and a suitable support for the roller ateach end thereof and a rock-shaft carrying the said supports one at eachend of the shaft and rocking them, and means to rock the rock-shaftarranged at one end thereof, of a spring interposed between therock-shaft and the roller-support at the end of the rock-shaft near itsrocking means and a more resistant spring interposed between therock-shaft and the roller-support at the end of the rock-shaft fartherfrom its rocking'means, whereby the motion is there conveyed from therock-shaft to the supports through the springs, and the elfect oftorsion in the rock-shaft upon the fact or character of contact from endto end of the roller is counteracted, substantially as described.

6. In combination with a ductor or other roller or elongated device tobe rocked and to operate by contact, and the contacting device itselfwith which it is to so operate, and a suitable support for the roller ateach end thereof and a rock-shaft carrying the said supports one at eachend of the shaft and rocking them, and means to rock the rockshaftarranged at one end thereof, of an adjustable spring interposed betweenthe rockshaft and the roller-support at the end of the rock-shaft nearits rocking means and an adjustable spring interposed between therockshaft and the roller-support at the end of the rock-shaft fartherfrom its rocking means,

whereby the motion is there conveyed fromcarrying the said supports oneat each end of the shaft and rocking them, and means to rock therock-shaft arranged at one end thereof, of an adjustable double-actingspring or set of springs interposed between the rock-shaft and theroller-support at the end of the rockshaft near its rocking means and anadjustable double-acting spring or set of springs interposed between therock shaft and the roller-support at the end of the rock-shaft fartherfrom its rocking means, whereby the motion in both directions is thereconveyed from the rock-shaft to the supports through the springs, andthe effect of torsion in the rock-shaft upon the fact or character ofcontact from end to end of the roller with either of the two contactingdevices may be counteracted, substantially as described.

8. The combination, substantially as described, of the rock-shaft C, therocking mechanism D applied at or near one end of the shaft, arms H H,adjustable springs I I I l,

sliding boxes B B, the ductor-roller A, and

the contacting rollers E and F. v

9. In combination with a ductor or other roller orelongated device to berocked, and a suitable support for the roller at each end, and twocontacting devices between which it is to so rock and so operate and arock=shaft carrying the said supports one at each end of r the shaft androcking them, and means to rock the rock-shaft, applied at or near oneend thereof, of a doubleacting spring device interposed between therock-shaft and the roller-support at at least one end of the shaft,whereby the motion is conveyed from the rock-shaft to the supportthrough the spring device and the effect of torsion in the rockshaft orany imperfection in other parts of the mechanical movement upon the factor character of contact from end to end of the roller may becounteracted, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE E. PANCOAST.

Witnesses:

GEO. H. BARNES, EDWIN SEGER.

